Artemis BP00707, Руководство пользователя

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4.5 Sonar Application
The Sonar Application shows a polar (top-down) image of acoustic echoes transmitted
and received by the sonar and varying angles as its scans across its 90° field of vision
in front of the diver.
See the section 7 “Understanding Sonar Imagery” on page 60 for further details of how
to interpret the sonar display and get the best performance from the range and gain
controls.
When the Sonar Application is active, the console buttons have the following
functions…
Range Up
Increases the range scale on the sonar display.
Range Down
Decreases the range scale on the sonar display.
Gain Down
Decreases the sonar gain – image intensity will be reduced and finer detail
seen on closer targets.
Gain Up
Increases the sonar gain – fainter targets will appear brighter.
4.5.1 Gain
The current sonar gain is shown at the bottom right of the display as a percentage.
Increasing the gain will amplify fainter echoes making the entire display appear
brighter (and possibly saturate some target detail), while decreasing the gain will dim
the display (possibly hiding fainter targets, but making it possible to detect texture and
detail on others).
4.5.2 Range
The sonar range is shown at the bottom left of the display, and represents the
maximum range the display is showing.
At larger ranges, the sonar scan rate will slow, as it must to wait longer to collect the
received echoes from targets, while lower ranges will increase scanning speed.
4.5.3 Heading and Depth
To assist in location, search and rescue tasks, the current magnetic heading and depth
sensor readings are shown at the top of the display.